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/*
* Copyright (c) 2021-2022 Arm Limited.
*
* SPDX-License-Identifier: MIT
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#if defined(__ARM_FEATURE_FP16_VECTOR_ARITHMETIC) && defined(ENABLE_FP16_KERNELS)
#include "arm_compute/core/Helpers.h"
#include "arm_compute/core/ITensorPack.h"
#include "arm_compute/core/Window.h"
#include "src/core/helpers/ScaleHelpers.h"
#include "src/core/NEON/NEMath.h"
#include "src/core/NEON/wrapper/wrapper.h"
#include "src/core/utils/ScaleUtils.h"
#include "support/Rounding.h"
#include <arm_sve.h>
#include <cmath>
#include <cstddef>
namespace arm_compute
{
namespace
{
void fp16_sve_scale_nearest(const ITensor *src,
ITensor *dst,
const ITensor *offsets,
float sampling_offset,
bool align_corners,
const Window &window)
{
const size_t in_stride_c = src->info()->dimension(0) + src->info()->padding().left + src->info()->padding().right;
const size_t in_stride_w = src->info()->dimension(1) + src->info()->padding().top + src->info()->padding().bottom;
const size_t in_stride_wc = in_stride_w * in_stride_c;
const size_t in_dim_h = src->info()->dimension(2);
// Compute the ratio between source height and destination height
const auto hr = scale_utils::calculate_resize_ratio(in_dim_h, dst->info()->dimension(2), align_corners);
const auto window_start_x = static_cast<int32_t>(window.x().start());
const auto window_end_x = static_cast<int32_t>(window.x().end());
Window win(window);
win.set(Window::DimX, Window::Dimension(0, 1, 1));
Iterator out(dst, win);
const uint8_t *in_ptr_start = src->buffer() + src->info()->offset_first_element_in_bytes();
const unsigned int in_stride_bytes_hwc = src->info()->strides_in_bytes()[3];
execute_window_loop(
win,
[&](const Coordinates &id)
{
const int32_t offset =
*reinterpret_cast<const int32_t *>(offsets->ptr_to_element(Coordinates(id.y(), id.z()))) * in_stride_c;
const auto in_hi = static_cast<int>(
align_corners ? utils::rounding::round_half_away_from_zero((id.z() + sampling_offset) * hr)
: std::floor((id.z() + sampling_offset) * hr));
const int offset_row = in_hi * in_stride_wc;
const auto in_ptr = reinterpret_cast<const float16_t *>(in_ptr_start + in_stride_bytes_hwc * id[3]);
const auto out_ptr = reinterpret_cast<float16_t *>(out.ptr());
// Compute S elements per iteration
int x = window_start_x;
svbool_t pg = svwhilelt_b16(x, window_end_x);
do
{
// Store results
svst1_f16(pg, out_ptr + x, svld1_f16(pg, in_ptr + offset + offset_row + x));
x += svcntw();
pg = svwhilelt_b16(x, window_end_x);
} while (svptest_any(svptrue_b16(), pg));
},
out);
}
} // namespace
namespace cpu
{
void fp16_sve_scale(const ITensor *src,
ITensor *dst,
const ITensor *offsets,
const ITensor *dx,
const ITensor *dy,
InterpolationPolicy policy,
BorderMode border_mode,
PixelValue constant_border_value,
float sampling_offset,
bool align_corners,
const Window &window)
{
ARM_COMPUTE_UNUSED(dx, dy, border_mode, constant_border_value);
if (policy == InterpolationPolicy::NEAREST_NEIGHBOR)
{
fp16_sve_scale_nearest(src, dst, offsets, sampling_offset, align_corners, window);
}
else
{
ARM_COMPUTE_ERROR("Not implemented");
}
}
} // namespace cpu
} // namespace arm_compute
#endif /* defined(__ARM_FEATURE_FP16_VECTOR_ARITHMETIC) && defined(ENABLE_FP16_KERNELS) */
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